Function gtk_sys::gtk_pad_controller_set_action

pub unsafe extern "C" fn gtk_pad_controller_set_action(
    controller: *mut GtkPadController, 
    type_: GtkPadActionType, 
    index: c_int, 
    mode: c_int, 
    label: *const c_char, 
    action_name: *const c_char
)

This is supported on crate feature v3_22 only.